Dynamic device mapping is a technology for

USB Universal Serial Bus (USB) is an industry standard that establishes specifications for cables, connectors and protocols for connection, communication and power supply (interfacing) between computers, peripherals and other computers. A broad ...

KVM switch A KVM switch (with KVM being an abbreviation for "keyboard, video, and mouse") is a hardware device that allows a user to control multiple computers from one or more sets of keyboards, video monitors, and mice. Name Switches to connect mu ...

es which is sometimes implemented as an alternative to standard

keyboard Keyboard may refer to: Text input * Keyboard, part of a typewriter * Computer keyboard ** Keyboard layout, the software control of computer keyboards and their mapping ** Keyboard technology, computer keyboard hardware and firmware Music * Musi ...

and

mouse A mouse ( : mice) is a small rodent. Characteristically, mice are known to have a pointed snout, small rounded ears, a body-length scaly tail, and a high breeding rate. The best known mouse species is the common house mouse (''Mus musculus' ...

emulation.

Design

With DDM (Dynamic Device Mapping) Technology, the communication between shared

peripherals A peripheral or peripheral device is an auxiliary device used to put information into and get information out of a computer. The term ''peripheral device'' refers to all hardware components that are attached to a computer and are controlled by the ...

and all connected systems are maintained 100% of the time, even as a user switches between the KVM ports. This makes generic device emulation unnecessary as the DDM allows each connected computer system to believe all connected I/O devices are remaining connected even as the

might move to another port.

KVM device emulation

Many USB KVM devices provide peripheral emulation, sending signals to the computers that are not currently selected to simulate a keyboard, mouse and monitor being connected. The emulation is used to avoid problems with machines which may reboot in unattended operation. Peripheral emulation services embedded in the hardware also provides continuous support where computers require constant communication with the

peripheral A peripheral or peripheral device is an auxiliary device used to put information into and get information out of a computer. The term ''peripheral device'' refers to all hardware components that are attached to a computer and are controlled by the ...

s. In addition, some types of computer systems do not treat

devices as hot-pluggable, which means the keyboard and mouse will not be re-detected when switching back to a particular KVM port. For these types of systems, it is necessary to implement device emulation. Standard device emulation has its limitations. When emulating a

keyboard, mouse, and monitor it is impossible for most KVM's to simulate various types of I/O devices specifically. As a result,

es will sometimes offer inconsistent performance and even sometimes unsolved compatibility issues with the shared keyboard, mouse, and other devices. The intent of Dynamic Device Mapping is to resolve the issues that standard device mapping sometimes faces.

Applications for USB DDM

* Sharing Touchscreen Monitor among connected systems * Integrated Multi-vendor Self-service Kiosk systems * Secured user login by sharing USB

Smart card A smart card, chip card, or integrated circuit card (ICC or IC card) is a physical electronic authentication device, used to control access to a resource. It is typically a plastic credit card-sized card with an embedded integrated circuit (IC) c ...

or fingerprint/

Biometrics Biometrics are body measurements and calculations related to human characteristics. Biometric authentication (or realistic authentication) is used in computer science as a form of identification and access control. It is also used to identify in ...

scanner/reader''

References

USB and USB Device Details

External links

*{{Commonscatinline Computer peripherals Input/output Out-of-band management

Design

KVM device emulation

Applications for USB DDM

See also

References

External links